Invention Grant
- Patent Title: Methods and apparatus for use in adaptively rerouting user plane traffic for mobility using segment routing for IPV6
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Application No.: US16694235Application Date: 2019-11-25
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Publication No.: US11202221B2Publication Date: 2021-12-14
- Inventor: Srinath Gundavelli , Ravi Kiran Guntupalli , Aeneas Sean Dodd-Noble , Kirk McBean
- Applicant: Cisco Technology, Inc.
- Applicant Address: US CA San Jose
- Assignee: Cisco Technology, Inc.
- Current Assignee: Cisco Technology, Inc.
- Current Assignee Address: US CA San Jose
- Main IPC: H04W28/02
- IPC: H04W28/02 ; H04W36/32 ; H04L12/721 ; H04W40/36 ; H04L12/723 ; H04W36/00 ; H04W28/12 ; H04L12/715 ; H04L12/749 ; H04W88/16 ; H04W8/08 ; H04W24/02 ; H04W36/12 ; H04L29/12 ; H04W40/24

Abstract:
A control plane (CP) entity is to adaptively reroute user plane traffic of a mobile node (MN) with use of a segment routing (SR) for IPv6. A message indicating an attachment of the MN to the mobile network is received selecting a first user plane (UP) anchor node. A first set of home network prefixes (HNPs) are allocated to the MN. An IP traffic flow using a first HNP prefix is established between the MN and a correspondent node (CN) along a first network path—defined at least in part by the first UP anchor node and an anchor node of the CN. In response to a handover of the MN, a message indicating a subsequent attachment of the MN is received selecting a second UP anchor node. The second UP anchor node is instructed to host the first HNP prefix previously allocated by the first UP anchor node.
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